In the NY Passenger Lists 1820-1957, Abraham Zapruder enters in 1920 with Chana Zapruder (his mother) and two siblings. On 11 Jul 1909 Snul Zapruder enters the country, alone, on the Cincinnati from Hamburg. He lists his wife as Chana Zapruder, so this sounds like the ideal candidate to be the father of Abraham.

I haven't found Snul in any other records yet, so the burial place is still a mystery to me.

I was trying to figure out how you guys knew that Snul was the same as Israel. I then found the WWI Draft registration for Israel Zapruder and he lists his wife as Anna. Guess you were all quicker than me today!!